Yes from bitt’s helpful wiki link ( sorry I should have looked that up), it really has only been used nationwide during the civil war, all others were local, regional or over a state but not at national level.
I’ve looked up, and posted, the actual Insurrection Act specs. I do think it’s very possible Trump may invoke it if the demsheviks get too out of hand up to and including using auntifaz, BurnLootMurder and others assorted thugs on a wide scale.